James h



H`. BARLOW. McouAno Loom. APPLICATION FILED JUNE 3, ISHS.

Patented Dec. 2,1919.

sATn's JAMES n. `nAnLow, or LnwisToN, MATNE, Assrenon To oRoMPTon aKnownns Loon Wenns,` or WORCESTER,MASSACHUSETTS, A CORPORATION orMASSACHUSETTS.

JAcoUAnn Loon.

Specification of Letters Patent.

Patenten nena, raie.

Application led June 3, 1919. Serial No. 301,452.

This invention relates to a Jacquard loom provided with reversible cardfeeding mechanism, and also todrop-box mechanism controlled by cardperforations. i lt is essential that the indicationffor a drop-boxchange be made on the Vpick previous to the actual box movement. Thisindication is commonly made by a special set of'jacquard needles,controlled by special perforations in the pattern card, and thelindication for a box change is commonly made from the card preceding thecard whichis to be in Voperative position whenV the change actuallyoccurs. No difliculty is encountered with this arrangement so long asthe card chain runs a single direction only, but whenthe chain isreversed, the boX change indications are found inthe card following thaton which the change should occur, instead of inthe card precedingY theVchange.

The object of my invention is to provide an improved construction bywhich the drop-box change may be correctly indicated with the patternchain feeding either forward or backward. j v

W ith this general object in view, an important featurel of my.invention relates to the provision of two sets of boX change indileating perforationsin the pattern card, together with devices coperatingwith one set when the chain is feeding forward, and with the other setwhen the chain is feeding backward. My invention further. consists inthe provision of mechanism by which a change in the direction of cardfeed causes a corresponding change in the operation Vof said devices. j

In the preferred embodiment of'myinvention two sets of jacquard needlesare provided, corresponding to the two sets of cardperforations, and oneset of needles is operative during forward card movement,

^ and lthe second setduring backward 'card A movement.

My invention further consists in arrangements and combinations of partswhich will be hereinafter described and more particularly pointedout inthe appended claims. Y

A preferred form of my invention is shown in the drawings in which- YFigure 1 is a front elevation of a portion of a jacquard mechanismembodying my impiovement;

, Fig. 2 is an enlarged detail view of certai parts, and

Fig. 3 is a plan view of a portion of a card chain.

Referring to the drawings, Fig. 1 shows a jacquard frame 10 having theusual griff bars 11 vertically movable by lifting rods 12 and 13alternately actuated by the driving mechanism (not shown). The usualpattern chain cylinder 14 is mounted Aon rods 15 by Awhich it ishorizontally reciprocated. As it moves tothe left it operates throughvthe jacquard-needles to move all of the uncalled hooks from the path ofthe ascendinggriff bars and as it moves to the right it is engaged byone of the feed pawls 16 or 17 and isrotated one quarter of afrevolutionforward or backward as the case may be.

Y The pawls 16 and 17 are connected by a link 18 and the pawl 17 isextended to the left beyond its bearing and is connected by a link orcord 19 to a reversing lever 20. The reversing lever is controlled by apattern chain 21 forming part 0f a lreversing mechanism whichconstitutes no part of my invention, and which is fully described iiiprior United States Patent No. 578,068'. When a ball or raised linkcomes under the lever 20, rthe feed pawl 17 becomes operative,

and the feed pawl 16 becomes simultaneously inoperative.

The drop-boxes (not shown) are controlled by cords or links 22,angle-levers 23, and cords or links 24?: connected to jacquard hooks 25.Two sets of hooks are provided,

operati-ve position-.vis indicatedby a perforae ,tion 31 in thepreceding` card. 29. When the chain is reversed and is running in theAdirection ofthe arrow bin Fig, the. indication` for the same changecomes from.'V the perforation 32 in the card 30 instead of from theperforation 3l in the card 29.

l Will n .v describe thearrangement .by

WhichA the ,perforation 3l becomes inoperaf tive, and 'the perforation32 becomes operative upon the reversal ofcard feed.

The needles 26 and 27 previously described' are connectedv to arms 33andl securedf' to` afshort shaft 35 orothervvise roatalfilymounted uponafixed axis. A third arm 361 issecuredto the shaft and. is con nected by-acord or link 37 to thereversing lever 20. Aifourth arm' 38 may beprovided oir-the. shaft 35,. toi Whicha coiled spring 39 the positionshoivn in Fig. l. A Theneedles-Q and 27. are prcvi'dedlcwith slots 4:0permitting lost motion betweenV the is connected to-- vieldinglyf holdthe shaft in Y needles andthe aims-33 and 34C, and areI also a providedwith compression springs ellengagedffatf their left handV ends'V by:iixe'dfcross rods lL-2,.and at theirright hand ends enf gaging off-setportions of thelneedles;

The springsV il normally press'the needles Vyieltl-ingly` to the: rightto. engage the pattern be moved to the left, withdrawing its hook from fthepath of the grill' bar. When a needle encounters a perforation inthecard, thelneedle remains in operative position and its hook is liftedbythe lgrilfbar to cause-'a box changeto be indicated. v Reference to`ll`ig. 3l will show Vthat th perfor-ations 3l andperforations A32arepositiened` in different portions of the-.,card,

sothat a perforation'l can never cause indication by a needle 26 and aperforationfSQ canI never cause indication by -a needlefQ'. lAs the'lever arms anddn are controlled from the reVerSingleVerQO, a changeint-he 4 position of the reversing lever will Withdraw one set-ofneedles from operative po.- sition and will simultaneously advance thesecondsettooperative position. l am thus able to provide; operati-veindicatiitgl perforations in the card preceding a drop-box change-,Withthe Apattern chain,7 moving in either direction, and such operativeperforations become inoperative as soon as thedirection of pattern feedis reversed, other perforations then becoming operative.

I thus accomplish my desired result,

,ivill be evident that changes and Vmodifications canbe made therein bythose skilled in the art Without departing from vthe spirit and scope;thereof-as set forth in the claims,

and l do not Wish to be otherwise limited to the details hereindisclosed, but. what l, do, claims is z* Y `hln la loom, fthevcombination of ajacquaid mechanism includingV alplurality ofpatterncards, means to `feed said cardsin opposite f directions,.drop-boxY mechanism controlled from said cards, and means: to indicatealcertain lboit change upon a certain card ywhen feedingfin onedirection, and upon a: :different card when feeding inthe oppositedirection.

i12'. f-In alooin, in combinatioma jacquard mechanism includingalplurality of pattern cards, vmeans to feed 'sa-'id cards: in oppositedirections, drop-box .'meclianism, a Vset of needles ccmtrolling.-theboxl vchanges when the-'cards are fed-:in -one "direction, andanother set of needles Acrmtrol-ling.v the box changes Whenthecards arefedinthe -opposite direction, said cards having a-vseparate set ofperforations for each set of needles.

3. In a loom, in combination, fajacquard mechanism including a pluralityof pattern cards, means to feed -saidf cards fr in opposite patternchain `moving in directions, drop-box,nieohanism, Va l.set ofneedlesloontrolling the boX changes When the cards are fedVv in onedirection, another set of needles controlling the boxchangesfwhen the Ccards are fed in the opposite direction,

said cardshaving a separate setof perforation foreach-set oflneed-les,andn meansto render AVone setof needles Aoperative and" the otherinoperative When the directionfof card Afeed' is reversed.

4.111 a loom,in combination,-a jacquard mechanisnr including'a pluralityof pattern cards,'means'to .feed said cards in-opposite direct-ions,drop-box mechanism, a set of needlescontrolling the box changes `whenvthe cards. are ffed in one direction, another set of needles controllingthe box changes when the cards are fedinthe opposite direction,

iis

saidfcards havinga separate-set of perforations for each vsetoff'needles,` and means to Withdraw one set of, needles and to advancethe other setof needleswhen` the direction ,ofcard feed is reversed Y 5.,In a loom, lin combination,a-jacquard i mechanism including'a`pluralityV ofAl pattern cards, means-to feed said cards in oppositeneedles controlling the box changes when the l directions, dropi-hoxmechanism, .a5 *set of cards are fed in one direction, anothei` set ofneedles controlling the box changes `when the cards are fed in theopposite direction, said cards havinga separate set of perforations foreach set of needles, and means to Withdraw one set of needles and toadvance the other set of needles When the direction of card feed isreversed, said needles having a lost-motion connection With said lattermeans.

6. In a loom, the combination of a jacquard mechanism including aplurality of pattern cards, means to feed said cards in oppositedirections, drop-box mechanism, and means to control the box changes bycard perforations, said cards having perforations in a certain portionthereof eective to control the boX changes When fed in one direction,and having perforations in a different portion thereof effective tocontrol the box changes when fed in the opposite direction.

7 In a loom, a jacquard mechanism coniprising a card cylinder, a pair offeed pavvls e'ective to feed said cylinder in opposite directions, areversing lever controlling the position of said pawls, a pattern chainpositioning said lever, drop-box mechanism, tWo sets of needlescontrolling the box changes, and connections from said needles to saidreversing lever through Which one set of needles is advanced tooperative position and the other set is Withdrawn to inoperativeposition, as the position of the feed paWls is changed by said reversinglever.

In testimony whereof I have hereunto aflixed my signature.

JAMES H. BARLOW.

